Portable ice-box



FIG. 1 is a perspective view of a portable ice-box showing my new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a left side view thereof, the right side view being a mirror image thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a top view thereof. 

The ornamental design for a portable ice-box, as shown and described. 